[AleksanderB]

>I have a number of clients

Could you tell me who are your clients or at least what sector they are in?

>Each has a "wish" list of technical goods and services

Could you give an example of the goods and services?

This sounds very much like a knapsack problem! (https://en.wikipedia.org/wiki/Knapsack_problem)

[trcollinson]

Ha! It is :) well done. I put it in as a thought experiment and a joke. However, believe it or not, I actually do get these types of questions a lot from clients mostly in the publishing industry. They mostly want to spend all their budget down to the penny on things like new fonts and fixed price graphics sets.

At any rate, good job on catching my joke :) and I don't expect you to work on it. I hope someone gives you a real problem to try out!